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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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 */
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#include "ofw.h"
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#include <ofw.h>
30
#include "asm.h"
-
 
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#include "printf.h"
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#include <printf.h>
32
 
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#define MAX_OFW_ARGS    10
-
 
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#define BUF_SIZE        1024
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35
 
-
 
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typedef unsigned int ofw_arg_t;
-
 
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typedef unsigned int ihandle;
-
 
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typedef unsigned int phandle;
-
 
39
 
-
 
40
/** OpenFirmware command structure
-
 
41
 *
-
 
42
 */
-
 
43
typedef struct {
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    const char *service;          /**< Command name */
-
 
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    unsigned int nargs;           /**< Number of in arguments */
-
 
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    unsigned int nret;            /**< Number of out arguments */
-
 
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    ofw_arg_t args[MAX_OFW_ARGS]; /**< List of arguments */
-
 
48
} ofw_args_t;
-
 
49
 
-
 
50
typedef void (*ofw_entry)(ofw_args_t *);
-
 
51
 
-
 
52
 
-
 
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typedef struct {
-
 
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    unsigned int info;
-
 
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    unsigned int addr_hi;
-
 
56
    unsigned int addr_lo;
-
 
57
} pci_addr_t;
-
 
58
 
-
 
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typedef struct {
-
 
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    pci_addr_t addr;
-
 
61
    unsigned int size_hi;
-
 
62
    unsigned int size_lo;
-
 
63
} pci_reg_t;
-
 
64
 
-
 
65
 
-
 
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ofw_entry ofw;
-
 
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-
 
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phandle ofw_chosen;
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ihandle ofw_stdout;
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phandle ofw_root;
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ihandle ofw_mmu;
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phandle ofw_memory;
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phandle ofw_aliases;
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-
 
75
 
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static int ofw_call(const char *service, const int nargs, const int nret, ofw_arg_t *rets, ...)
-
 
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{
-
 
78
    va_list list;
-
 
79
    ofw_args_t args;
-
 
80
    int i;
-
 
81
   
-
 
82
    args.service = service;
-
 
83
    args.nargs = nargs;
-
 
84
    args.nret = nret;
-
 
85
   
-
 
86
    va_start(list, rets);
-
 
87
    for (i = 0; i < nargs; i++)
-
 
88
        args.args[i] = va_arg(list, ofw_arg_t);
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89
    va_end(list);
-
 
90
   
-
 
91
    for (i = 0; i < nret; i++)
-
 
92
        args.args[i + nargs] = 0;
-
 
93
   
-
 
94
    ofw(&args);
-
 
95
   
-
 
96
    for (i = 1; i < nret; i++)
-
 
97
        rets[i - 1] = args.args[i + nargs];
-
 
98
   
-
 
99
    return args.args[nargs];
-
 
100
}
-
 
101
 
-
 
102
 
-
 
103
static phandle ofw_find_device(const char *name)
-
 
104
{
-
 
105
    return ofw_call("finddevice", 1, 1, NULL, name);
-
 
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}
-
 
107
 
-
 
108
 
-
 
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static int ofw_get_property(const phandle device, const char *name, const void *buf, const int buflen)
-
 
110
{
-
 
111
    return ofw_call("getprop", 4, 1, NULL, device, name, buf, buflen);
-
 
112
}
-
 
113
 
-
 
114
 
-
 
115
static unsigned int ofw_get_address_cells(const phandle device)
-
 
116
{
-
 
117
    unsigned int ret;
-
 
118
   
-
 
119
    if (ofw_get_property(device, "#address-cells", &ret, sizeof(ret)) <= 0)
-
 
120
        if (ofw_get_property(ofw_root, "#address-cells", &ret, sizeof(ret)) <= 0)
-
 
121
            ret = 1;
-
 
122
   
-
 
123
    return ret;
-
 
124
}
-
 
125
 
-
 
126
 
-
 
127
static unsigned int ofw_get_size_cells(const phandle device)
-
 
128
{
-
 
129
    unsigned int ret;
-
 
130
   
-
 
131
    if (ofw_get_property(device, "#size-cells", &ret, sizeof(ret)) <= 0)
-
 
132
        if (ofw_get_property(ofw_root, "#size-cells", &ret, sizeof(ret)) <= 0)
-
 
133
            ret = 1;
-
 
134
   
-
 
135
    return ret;
-
 
136
}
-
 
137
 
-
 
138
 
-
 
139
static ihandle ofw_open(const char *name)
-
 
140
{
-
 
141
    return ofw_call("open", 1, 1, NULL, name);
-
 
142
}
-
 
143
 
-
 
144
 
-
 
145
void init(void)
-
 
146
{
-
 
147
    ofw_chosen = ofw_find_device("/chosen");
-
 
148
    if (ofw_chosen == -1)
-
 
149
        halt();
-
 
150
   
-
 
151
    if (ofw_get_property(ofw_chosen, "stdout",  &ofw_stdout, sizeof(ofw_stdout)) <= 0)
-
 
152
        ofw_stdout = 0;
-
 
153
   
-
 
154
    ofw_root = ofw_find_device("/");
-
 
155
    if (ofw_root == -1) {
-
 
156
        puts("\r\nError: Unable to find / device, halted.\r\n");
-
 
157
        halt();
-
 
158
    }
-
 
159
   
-
 
160
    if (ofw_get_property(ofw_chosen, "mmu",  &ofw_mmu, sizeof(ofw_mmu)) <= 0) {
-
 
161
        puts("\r\nError: Unable to get mmu property, halted.\r\n");
-
 
162
        halt();
-
 
163
    }
-
 
164
   
-
 
165
    ofw_memory = ofw_find_device("/memory");
-
 
166
    if (ofw_memory == -1) {
-
 
167
        puts("\r\nError: Unable to find /memory device, halted.\r\n");
-
 
168
        halt();
-
 
169
    }
-
 
170
   
-
 
171
    ofw_aliases = ofw_find_device("/aliases");
-
 
172
    if (ofw_aliases == -1) {
-
 
173
        puts("\r\nError: Unable to find /aliases device, halted.\r\n");
-
 
174
        halt();
-
 
175
    }
-
 
176
}
-
 
177
 
-
 
178
 
-
 
179
void ofw_write(const char *str, const int len)
32
void write(const char *str, const int len)
180
{
-
 
181
    if (ofw_stdout == 0)
-
 
182
        return;
-
 
183
   
-
 
184
    ofw_call("write", 3, 1, NULL, ofw_stdout, str, len);
-
 
185
}
-
 
186
 
-
 
187
 
-
 
188
void *ofw_translate(const void *virt)
-
 
189
{
-
 
190
    ofw_arg_t result[3];
-
 
191
   
-
 
192
    if (ofw_call("call-method", 4, 4, result, "translate", ofw_mmu, virt, 1) != 0) {
-
 
193
        puts("Error: MMU method translate() failed, halting.\n");
-
 
194
        halt();
-
 
195
    }
-
 
196
    return (void *) result[2];
-
 
197
}
-
 
198
 
-
 
199
 
-
 
200
int ofw_map(const void *phys, const void *virt, const int size, const int mode)
-
 
201
{
-
 
202
    return ofw_call("call-method", 6, 1, NULL, "map", ofw_mmu, mode, size, virt, phys);
-
 
203
}
-
 
204
 
-
 
205
 
-
 
206
int ofw_memmap(memmap_t *map)
-
 
207
{
-
 
208
    unsigned int buf[BUF_SIZE];
-
 
209
    int ret = ofw_get_property(ofw_memory, "reg", buf, sizeof(unsigned int) * BUF_SIZE);
-
 
210
    if (ret <= 0)
-
 
211
        return false;
-
 
212
       
-
 
213
    unsigned int ac = ofw_get_address_cells(ofw_memory);
-
 
214
    unsigned int sc = ofw_get_size_cells(ofw_memory);
-
 
215
   
-
 
216
    int pos;
-
 
217
    map->total = 0;
-
 
218
    map->count = 0;
-
 
219
    for (pos = 0; (pos < ret / sizeof(unsigned int)) && (map->count < MEMMAP_MAX_RECORDS); pos += ac + sc) {
-
 
220
        void * start = (void *) buf[pos + ac - 1];
-
 
221
        unsigned int size = buf[pos + ac + sc - 1];
-
 
222
       
-
 
223
        if (size > 0) {
-
 
224
            map->zones[map->count].start = start;
-
 
225
            map->zones[map->count].size = size;
-
 
226
            map->count++;
-
 
227
            map->total += size;
-
 
228
        }
-
 
229
    }
-
 
230
}
-
 
231
 
-
 
232
 
-
 
233
int ofw_screen(screen_t *screen)
-
 
234
{
-
 
235
    char device_name[BUF_SIZE];
-
 
236
   
-
 
237
    if (ofw_get_property(ofw_aliases, "screen", device_name, sizeof(char) * BUF_SIZE) <= 0)
-
 
238
        return false;
-
 
239
   
-
 
240
    phandle device = ofw_find_device(device_name);
-
 
241
    if (device == -1)
-
 
242
        return false;
-
 
243
   
-
 
244
    if (ofw_get_property(device, "address", &screen->addr, sizeof(screen->addr)) <= 0)
-
 
245
        return false;
-
 
246
   
-
 
247
    if (ofw_get_property(device, "width", &screen->width, sizeof(screen->width)) <= 0)
-
 
248
        return false;
-
 
249
   
-
 
250
    if (ofw_get_property(device, "height", &screen->height, sizeof(screen->height)) <= 0)
-
 
251
        return false;
-
 
252
   
-
 
253
    if (ofw_get_property(device, "depth", &screen->bpp, sizeof(screen->bpp)) <= 0)
-
 
254
        return false;
-
 
255
   
-
 
256
    if (ofw_get_property(device, "linebytes", &screen->scanline, sizeof(screen->scanline)) <= 0)
-
 
257
        return false;
-
 
258
   
-
 
259
    return true;
-
 
260
}
-
 
261
 
-
 
262
 
-
 
263
int ofw_keyboard(keyboard_t *keyboard)
-
 
264
{
33
{
265
    char device_name[BUF_SIZE];
-
 
266
   
-
 
267
    if (ofw_get_property(ofw_aliases, "macio", device_name, sizeof(char) * BUF_SIZE) <= 0)
-
 
268
        return false;
-
 
269
   
-
 
270
    phandle device = ofw_find_device(device_name);
-
 
271
    if (device == -1)
-
 
272
        return false;
-
 
273
   
-
 
274
    pci_reg_t macio;
34
    ofw_write(str, len);
275
    if (ofw_get_property(device, "assigned-addresses", &macio, sizeof(macio)) <= 0)
-
 
276
        return false;
-
 
277
   
-
 
278
    keyboard->addr = (void *) macio.addr.addr_lo;
-
 
279
    keyboard->size = macio.size_lo;
-
 
280
   
-
 
281
    return true;
-
 
282
}
35
}